Raspberry plant named ‘PS-1852’

ABSTRACT

This invention relates to a new and distinct variety of raspberry plant named ‘PS-1852’. The new variety is primarily adapted to the growing conditions of the central coast of California and is characterized by the following: large upright primocanes, late fall primocane production, early spring floricane production, large conical berries, with nearly ⅔ of the total production coming from the floricane. Foliage is strongly concave, medium green; possessing very strong rugosity, and always 3-foliage. Primocanes have a weak waxy coat, dense thorns, and weak to medium anthocyanin coloration.

Latin name of the genus and species of the plant claimed: Rubus idaeus.

Variety denomination: ‘PS-1852’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct raspberry varietydesignated as ‘PS-1852’. This new variety is a result of a controlledcross made by the inventor, Stephen M. Ackerman, in 1995 betweenraspberry variety ‘PS-1094’ (an unpatented Plant Sciences, Inc.selection) and raspberry variety ‘PS-1316’ (an unpatented selection).The variety is botanically known as Rubus idaeus.

The seedling resulting from the aforementioned cross was asexuallypropagated by dormant canes in Santa Cruz County, Calif. and wassubsequently selected by the inventor from a controlled breeding plot inWatsonville, Calif. in 1997. After its selection, the new variety wasfurther asexually propagated by dormant canes, roots and non-dormantroot shoot cuttings in both Santa Cruz County, Calif. and San JoaquinCounty, Calif. The new variety was then extensively tested over the nextseveral years in fruiting fields in Santa Cruz County, Calif. Thispropagation has demonstrated that the combination of traits disclosedherein as characterizing the new variety are fixed and remain true totype through successive generations of asexual reproduction.

BRIEF SUMMARY OF THE INVENTION

‘PS-1852’ is primarily adapted to the climate and growing conditions ofthe central coast of California. This region provides the necessaryyear-round temperatures required for it to produce and maintain a strongvigorous plant and to remain in fruit production from August throughDecember on primocanes and in the ensuing year from May through July onthe floricanes. The following traits have been repeatedly observed andare determined to be unique characteristics of ‘PS-1852’, which incombination distinguish this raspberry plant as a new and distinctvariety:

-   -   1. Large plant size;    -   2. Late fall primocane production;    -   3. Early spring floricane production; and    -   4. Large fruit size.

The raspberry varieties that are believed to be most closely related tothe new raspberry variety ‘PS-1852’ are the raspberry variety ‘PS-1049’(patented, U.S. Plant Pat. No. PP 10,142), and the raspberry variety‘PS-1703’ (patented, U.S. Plant Pat. No. PP 15,151).

In comparison to the similar raspberry varieties ‘PS-1049’ and‘PS-1703’, ‘PS-1852’ differs by the following combination ofcharacteristics described in Table 1:

TABLE 1 ‘PS-1049’ ‘PS-1703’ Characteristic ‘PS-1852’ (U.S. PP 10,142)(U.S. PP 15,151) 1. Primocane 2.2 2.0 1.8 length (m) 2. Basal 18.6 16.415.3 diameter (mm) 3. Internode 3.8 5.0 5.8 length of central ⅓ (cm) 4.Predominate Always 3 Equal 3-5 Mostly 5 number of leaflets 5. Leaf color7.5GY 3/4 to 7.5GY 3/4 to 4/4 7.5GY 2/4 to 3/4 (upper side) 3/6 6. Leafshape Strongly Slightly Slightly (cross concave concave concave section)to slightly convex 7. Rugosity Very strong Medium Medium to strong 8.Percent of 27% 40% 46% primocane fruiting 9. Primocane 10Y 7/4 to 7/65GY 7/4 to 6/4 7.5GY 6/2 to 6/4 color 10. Floricane 2.5YR 3/4 to 5YR 4/4to 4/6 5YR 4/4 to 4/6 color 7.5YR 4/6 11. Bloom Weak Strong Medium tointensity strong 12. Thorn den- 7.2 4.0 4.5 sity per cm of central ⅓

For identification a series of molecular markers have been determinedfor this new variety.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying color photographs illustrate the overall appearance oftypical specimens of the new raspberry variety, ‘PS-1852’, at variousstages of development as true as reasonably possible with colorreproductions of this type. Color in the photographs may differ slightlyfrom the color value cited in the detailed botanical description whichaccurately describes the color of ‘PS-1852’. The depicted plant andplant parts of the new raspberry variety ‘PS-1852’ were taken inWatsonville, Calif. and are approximately 7 to 10 months old.

FIG. 1 shows typical primocane plant characteristics taken in the monthof August;

FIG. 2 shows a close-up of typical primocane foliage characteristicstaken in the month of August;

FIG. 3 shows typical primocane field fruiting characteristics taken inthe month of August; and

FIG. 4 shows typical primocane fruit characteristics taken in the monthof October.

DETAILED BOTANICAL DESCRIPTION

‘PS-1852’ has not been observed under all possible environmentalconditions. The characteristics of the new variety may vary in detail,depending upon variations in environmental factors, including weather(temperature, humidity and light intensity), day length, soil type, andlocation.

The aforementioned photographs, together with the following descriptionof the new raspberry variety ‘PS-1852’, unless otherwise noted, is basedon observations taken during the 2006 growing season in Watsonville,Calif. Primocane measurements and ratings were taken from plants of‘PS-1852’ dug from a nursery located in San Joaquin County, Calif.,during the middle of December, 2005, and planted approximately 3 to 4weeks later in Watsonville, Calif. The approximate age of the observedprimocane plants is 7 to 8 months. Floricane measurements and ratingswere taken from the plants of ‘PS-1852’ dug from a nursery located inSan Joaquin County, Calif., during the middle of December, 2004, andplanted approximately 3 to 4 weeks later in Watsonville, Calif. Theapproximate age of the observed floricane plants is 16 to 18 months.Yield observations and fruit quality characteristics are averaged fromthree years of data collected from the 2004 through 2006 productionseasons. Flower measurements and characteristics are from secondaryflowers unless otherwise noted. Fruit characteristics and measurementsare from secondary fruit unless otherwise noted. Foliage characteristicsand measurements are from 3-foliate foliage unless otherwise noted.

Color terminology where noted follows the Munsell Book of Colors,Munsell Color, Baltimore, Md. (1976).

In comparison to the similar raspberry varieties ‘PS-1049’ and‘PS-1703’, the fruit characteristics of ‘PS-1852’ differ as described inTable 2:

TABLE 2 FRUIT CHARACTERISTICS ‘PS-1049’ ‘PS-1703’ Characteristic‘PS-1852’ (U.S. PP 10,142) (U.S. PP 15,151) Color mature 5R 3/6 to 3/85R 3/6 to 3/8 5R 3/10 to 3/8 fruit Medium red Medium red Medium redColor achenes 10YR 7/4 to 8/4 10YR 7/4 to 8/4 10YR 7/4 to 8/4 FruitLength 2.3 1.9 2.1 (cm) Fruit Width 2.0 1.8 1.8 (cm) Length/Width 1.11.1 1.2 Ratio Slightly longer Slightly longer Slightly longer than broadthan broad than broad Seed weight 1.8 1.5 1.6 (mg) Druplets per 113 104113 berry Fruit size Large Medium Medium Predominant Conical ConicalConical shape Evenness of Slightly uneven Even Even color GlossinessMedium Medium Strong Adherence of Weak Weak Weak receptacle Firmness ofFirm Very firm Firm flesh Firmness of Medium Very firm Medium skin

In comparison to the similar raspberry varieties ‘PS-1049’ and‘PS-1730’, the plant characteristics of ‘PS-1852’ differ as described inTable 3:

TABLE 3 PLANT CHARACTERISTICS ‘PS-1049’ ‘PS-1703’ Characteristic‘PS-1852’ (U.S. PP 10,142) (U.S. PP 15,151) General: Habit UprightSemi-upright Semi-upright Size Large Medium Medium Productivity MediumHigh High Self Yes Yes Yes fruitfulness Type of Everbearing EverbearingEverbearing bearing Primocane: Color 10Y 7/4 to 7/6 5GY 7/4 to 6/4 7.5GY6/2 to 6/4 Medium yellow- Light green- Medium to light green yellowgreen-yellow Length (m) 2.2 2.0 1.8 Basal dia- 18.6 16.4 15.3 meter (mm)Diameter 12.3 11.3 10.9 central ⅓ (mm) Lateral length 46.3 57.4 64.6(cm) No. fruiting 10 14 13 laterals per cane % of cane 27% 40% 46%length fruiting Internode 3.8 5.0 5.8 length (of central ⅓ cm)Anthocyanin Weak to medium Weak to medium Medium to coloration strongPubescence Absent Absent Absent Length of Short to Medium Short toMedium Short to vegetative bud medium Strength of Weak Strong Medium towaxy coat strong Time of Late Medium Early flowering Time of Late MediumEarly fruiting Length of Medium Long Long fruiting season % of total 38%54% 52% yield Flowering Early August to Late June to Early June toperiod Late November Late November Late November Harvest period EarlySeptember Late July to Early July to to Late December Late December LateDecember Primocane fruit 3.7 2.8 3.1 weight (g) Primocane 1,037 1,8411,956 yield (g/plant) Young Shoots: Number Medium Medium MediumAnthocyanin Present Present Present coloration Anthocyanin Very weak toVery weak to Absent to very intensity weak weak weak Thorns: Color 7.5RP3/6 7.5RP 3/6 7.5RP 3/6 Purple Purple Purple Length central 2.3 2.2 1.7⅓ (mm) Presence on Present Present Present cane Density on Medium todense Medium Medium cane Texture Rigid Rigid Rigid Attitude ofHorizontal Horizontal Horizontal the tip Floricane: Color 2.5YR 3/4 to5YR 4/4 to 4/6 5YR 4/4 to 4/6 7.5YR 4/6 Brown Brown Brownish-purpleLength (m) 1.6 1.3 1.1 Length Short Long Short vegetative bud (mm)Strength of Weak Strong Medium to waxy coat strong Fruiting lateralErect to semi- Erect to semi- Horizontal to attitude erect erectdrooping Time bud Medium to late Medium Medium burst Time of EarlyMedium Medium flowering Time of Early Medium Medium fruiting Length ofMedium to long Medium to long Medium to fruiting season long % of total62% 46% 48% yield Flowering Early April to Late April to Mid April toperiod Late June Late June Late June Harvest period Early May to LateMay to Early May to Late July Late July Late July Floricane fruit 3.22.6 2.8 weight (g) Floricane yield 1,684 1,582 1,811 (g/plant)

In comparison to the similar raspberry varieties ‘PS-1049’ and‘PS-1703’, the foliage characteristics of ‘PS-1852’ differ as describedin Table 4:

TABLE 4 FOLIAGE CHARACTERISTICS ‘PS-1049’ ‘PS-1703’ ‘PS-1852’ (U.S. PP10,142) (U.S. PP 15,151) Characteristic (3 Foliate) (3 Foliate) (5Foliate) General: Color of 7.5GY 3/4 to 3/6 7.5GY 3/4 to 4/4 7.5GY 2/4to 3/4 upper surface Medium green Medium green Medium to Dark yellowGreen Color of 5GY 6/2 to 7/2 5GY 5/4 to 6/4 5GY 6/2 to 7/2 lowersurface Light to Pale Pale yellow- Light to Pale grey-green greengrey-green Shape in Strongly concave Slightly concave Slightly concavecross section to slightly convex Arrangement Compound Compound CompoundRelief be- Very strong Medium Medium to tween veins strong GlossinessWeak Weak Medium Number of Always 3 Equal 3-5 Mostly 5 leaflets/leafTerminal Leaflet: Length (cm) 13.6 15.2 13.5 Width (cm) 10.0 10.9 7.0Length/Width 1.4 1.4 1.9 Ratio Longer than Longer than Much longer broadbroad than broad Size Medium to large Medium to large Medium to smallShape Cordate Cordate Lobed oblique Shape of base Cordate Cordate AcuteShape of tip Acuminate Acuminate Acuminate Margins Biserrate BiserrateBiserrate Lateral Leaflet: Length (cm) 11.3 12.4 11.6 Width (cm) 7.4 7.67.0 Rachis 3.8 3.9 1.4 length (cm) Orientation Opposite OppositeOpposite Arrangement Compound Compound Compound Shape Ovate OvateOblique Overlapping Touching Touching Free Shape of Acute roundedOblique rounded Acute oblique the base Shape of the tip AcuminateAcuminate Acuminate Margins Biserrate Biserrate Biserrate Petiole:Length (cm) 5.1 6.0 6.2 Width (mm) 3.4 3.0 3.5 Thorn presence Yes YesYes Thorn Erect Erect Erect orientation Anthocyanin Absent to Absent toMedium to coloration of very weak very weak strong upper surfacePigmentation Light green- Light green- Light green- of lower yellowyellow yellow surface Stipule 1.1 1.1 1.1 length (cm) Stipule ErectErect Erect orientation

In comparison to the similar raspberry varieties ‘PS-1049’ and‘PS-1703’, the flower characteristics of ‘PS-1852’ differ as describedin Table 5:

TABLE 5 FLOWER CHARACTERISTICS ‘PS-1049’ ‘PS-1703’ Characteristic‘PS-1852’ (U.S. PP 10,142) (U.S. PP 15,151) Petal Color N 9.5/90% R to N9.5/90% R to N 9.5/90% R to N 9.25/84.2% R N 9.25/84.2% R N 9.25/84.2% RWhite White White Flower 2.0 1.7 1.7 diameter (cm) Size Medium MediumMedium Petal 5.8 5.8 6.4 Length (mm) Petal 2.8 2.7 2.7 width (mm) Petalwidth/ 2.1 2.2 2.4 width ratio Much longer Much longer Much longer thanbroad than broad than broad No. petals/ 5.0 5.0 5.0 flower No. sepals/5.0 5.0 5.2 flower Pedicel no. Few Many Medium spines Peduncle PresentPresent Present anthocyanin presence Peduncle Medium Very weak Very weakanthocyanin intensity

In comparison to the similar raspberry varieties ‘PS-1049’ and‘PS-1703’, the pest and disease reactions of ‘PS-1852’ differ asdescribed in Table 6:

TABLE 6 PEST AND DISEASE REACTIONS ‘PS-1049’ ‘PS-1703’ Characteristic‘PS-1852’ (U.S. PP 10,142) (U.S. PP 15,151) Two spotted spiderSusceptible Susceptible Susceptible mite Grey fruit mold SusceptibleSusceptible Susceptible Powdery mildew Moderately Moderately ModeratelySusceptible Susceptible Susceptible Yellow rust Moderately ModeratelyModerately Susceptible Susceptible Resistant

1. A new and distinct raspberry plant known as ‘PS-1852’, as hereindescribed and illustrated by the characteristics set forth above.